A spray mechanism and method for modifying the surface treatment of electronic boards

Abstract

The application discloses a kind of reformed electronic cloth surface treatment spray mechanism and method, it is related to electronic cloth technical field, including the pre-fiber opening spray module of being equipped with jet nozzle, for pre-loosening and preliminary cleaning to electronic cloth;Fan-shaped nozzle is equipped with the main fiber opening spray module, it is set downstream in pre-fiber opening spray module, for the final fiber opening of uniform spraying to electronic cloth;Circulating water system is connected with pre-fiber opening spray module and main fiber opening spray module respectively, for providing spray water and recycling filtration;Control unit is electrically connected with each spray module, for independently adjusting spray parameter;By the uniform distribution of spray energy grading control and spray flow field, avoid the problem that fiber breakage and air permeability are uneven in the process of spraying thin electronic cloth, suitable for the surface treatment process of different thickness electronic cloth, improve product consistency and equipment intelligent level.

Description

Technical Field

[0001] This invention relates to the field of electronic fabric technology, and in particular to a modified spraying mechanism and method for electronic fabric surface treatment. Background Technology

[0002] As a crucial component of high-end circuit substrates, the surface treatment quality of electronic-grade fiberglass cloth directly affects subsequent resin impregnation performance, dielectric properties, and the thickness uniformity and mechanical strength of the finished cloth. Traditional electronic cloth production processes typically include spinning, weaving, desizing, fiber opening, and surface treatment. The surface treatment stage is particularly critical, requiring the removal of residual impurities, improvement of fiber surface cleanliness, and adjustment of wettability through spraying, washing, or chemical activation to meet the requirements of subsequent resin bonding and film formation.

[0003] Most existing surface treatment equipment for electronic fabrics is designed for thick fabric products, and its spraying system often adopts a jet nozzle structure. Jet nozzles can generate a high-pressure, concentrated water flow that penetrates the fabric fiber layer with significant impact force, achieving a powerful peeling and rinsing effect, suitable for products with greater thickness and higher fabric density. The high-impact jet spraying method effectively breaks down impurities and adhesives between fibers, allowing thick fabrics to achieve uniform and breathable surface properties during cleaning and fiber opening. However, when this equipment is directly used in the production of thin electronic-grade fabrics, the impact of the high-energy water flow on the fabric surface significantly increases the risk of fiber breakage and warp and weft deformation, and in severe cases, can cause fabric holes or edge tears, affecting production continuity and finished product quality.

[0004] Furthermore, the structural characteristics of electronic-grade fabric dictate that its fibers are more densely packed and its monofilament diameter is finer. Existing spray systems fail to consider the control of water flow diffusion characteristics and impact distribution, resulting in problems such as concentrated flow and excessively high energy density during the fabric spraying process. After the high-energy jet penetrates the fabric layer, it creates a localized water hammer effect, causing uneven fiber opening and increased differences in air permeability, failing to meet the stringent uniformity and cleanliness requirements of electronic-grade substrates. At the same time, because the nozzle arrangement angle, spray distance, and flow field distribution are fixed, dynamic adjustment based on the fabric thickness, warp and weft density, and operating speed is not possible, resulting in spray energy that cannot accurately match process requirements.

[0005] To improve the surface treatment effect of thin electronic fabrics, some manufacturers have tried to alleviate the impact problem by reducing the spray pressure, adding diffusion nozzles, or thickening the guide layer in existing equipment. However, there are still shortcomings such as unstable effect, high energy consumption, narrow adjustment range and poor adaptability. Especially on continuous production lines, the spraying device is difficult to automatically switch modes or adjust parameters according to changes in the fabric surface, resulting in unstable fiber opening quality of thin fabric products, which increases the difficulty of process control and production costs.

[0006] In summary, the existing technology has at least the following technical problems:

[0007] Existing spraying mechanisms suffer from technical problems such as excessively high spray energy, uneven spray flow field distribution, and non-adaptive adjustment of spray parameters, making it difficult to meet the surface treatment process requirements of electronic cloths of different thicknesses. Summary of the Invention

[0008] The purpose of this invention is to provide a modified spraying mechanism and method for electronic cloth surface treatment, so as to solve the technical problems of existing spraying mechanisms, such as excessive spraying energy, uneven spray flow field distribution, and non-adaptive adjustment of spraying parameters, which make it difficult to meet the surface treatment process requirements of electronic cloth of different thicknesses.

[0009] The preferred technical solutions among the many technical solutions provided by this invention can produce a variety of technical effects, which are described in detail below.

[0010] To address the aforementioned technical problems, the present invention provides the following technical solution:

[0011] This invention provides a modified spraying mechanism for surface treatment of electronic fabric, including a frame and a conveying device mounted on the frame for conveying the electronic fabric. It further includes: a pre-fiber-opening spraying module disposed at the inlet end of the conveying device, the pre-fiber-opening spraying module being equipped with jet nozzles for pre-loosening and preliminary cleaning of the passing electronic fabric; a main fiber-opening spraying module disposed downstream of the pre-fiber-opening spraying module, the main fiber-opening spraying module being equipped with fan-shaped nozzles for uniformly spraying the pre-fiber-opened electronic fabric for final fiber opening; a circulating water system connected to both the pre-fiber-opening spraying module and the main fiber-opening spraying module, for providing spraying water and recycling and filtering it; and a control unit electrically connected to both the pre-fiber-opening spraying module and the main fiber-opening spraying module, for independently adjusting the spraying parameters of the pre-fiber-opening spraying module and the main fiber-opening spraying module, and electrically connected to the circulating water system to control the recycling and reuse of the spraying water.

[0012] In one embodiment, the main fiber-opening spray module includes an upper spray section and a lower spray section arranged opposite to each other, and both the upper spray section and the lower spray section are provided with the fan-shaped nozzles; the electronic cloth passes between the upper spray section and the lower spray section.

[0013] In one embodiment, the upper spray section and / or the lower spray section are mounted on the frame by an adjustable clamp, which is used to adjust the distance and spray angle of the fan-shaped nozzle relative to the electronic cloth.

[0014] In one embodiment, the fan-shaped nozzles of the upper spray section and the lower spray section are arranged alternately; and the angle between the spray axis of the fan-shaped nozzle of the upper spray section and the vertical direction is α=10°-25°, the angle between the spray axis of the fan-shaped nozzle of the lower spray section and the vertical direction is β=10°-25°, and the projections of the spray axes of the nozzles of the upper spray section and the lower spray section on the horizontal plane intersect.

[0015] In one embodiment, the circulating water system includes a pre-fiber opening water branch, a main fiber opening water branch, a return main pipe, and a filter device; the pre-fiber opening water branch is connected to the pre-fiber opening spray module via a pipe and is driven by a first water pump within the pre-fiber opening water branch; the main fiber opening water branch is connected to the main fiber opening spray module via a pipe and is driven by a second water pump within the main fiber opening water branch; the pre-fiber opening water branch and the main fiber opening water branch converge to the return main pipe, and the return main pipe is connected to the filter device.

[0016] In one embodiment, the first water pump and / or the second water pump is a variable frequency water pump.

[0017] In one embodiment, the control unit includes a human-machine interface module, a PLC controller, and frequency converters connected to the first water pump and the second water pump respectively; the human-machine interface module is used to input control commands, and the PLC controller communicates with the human-machine interface module and the frequency converter to adjust the operating frequency of the corresponding first water pump and the second water pump through the frequency converter according to the control commands.

[0018] In one embodiment, the fan-shaped nozzle has an adjustable lamination channel inside, which is configured to make the water flow ejected from the fan-shaped nozzle spread in a fan shape and to adjust the thickness and size of the fan-shaped water flow.

[0019] A surface treatment method for electronic cloth is also provided, which is performed by a spraying mechanism and includes the following steps performed in sequence: S1: The electronic cloth is conveyed by a conveying device and passes sequentially through a pre-fiber-opening spraying module and a main fiber-opening spraying module;

[0020] S2: High-pressure pre-fiber opening is performed on the electronic cloth through the jet nozzle of the pre-fiber spraying module;

[0021] S3: The pre-fiber-opening electronic cloth is sprayed with a uniform and gentle fan-shaped water curtain through the fan-shaped nozzles of the main fiber-opening spray module to complete the final fiber-opening process.

[0022] S4: The spray intensity of the pre-fiber opening spray module and the main fiber opening spray module can be independently adjusted by the control unit to adapt to electronic cloths of different thicknesses.

[0023] In one embodiment, in step S4, the operating frequency of the first water pump corresponding to the pre-fiber spray module is set through the human-machine interface module of the control unit to control the impact force of the water jet sprayed by the jet nozzle on the electronic cloth; at the same time, the operating frequency of the second water pump corresponding to the main fiber spray module is set independently to control the uniformity and softness of the fan-shaped water curtain of the fan-shaped nozzle.

[0024] The beneficial effects of this invention are as follows:

[0025] (1) Achieve graded control of spray energy to avoid damage to thin fabric; by using jet nozzles in the pre-fiber opening spray module and combining them with frequency-adjustable water pump control, the output impact force can be controlled for preliminary loosening of fibers and removal of impurities; while the main fiber opening spray module uses fan-shaped nozzles, and forms a uniformly distributed fan-shaped diffusion water curtain through flow channel modulation to achieve the effect of gentle spraying, avoiding fiber breakage, warp and weft deformation and fabric perforation caused by traditional high-pressure jet.

[0026] (2) Improve the distribution of the spray flow field and enhance the uniformity of the fabric surface; the fan-shaped nozzles provide a large area and uniform fan-shaped water curtain coverage in the main fiber opening spraying process, which can realize the synchronous wetting and balanced cleaning of the entire width of the electronic fabric, significantly improve the problem of uneven fiber opening and poor air permeability of thin fabric, and make the fiber opening consistency, surface cleanliness and air permeability distribution of the fabric surface more uniform.

[0027] (3) Achieve independent and adaptive adjustment of spraying parameters; Through the linkage between the control unit and the human-machine interface module, the spraying pressure, flow rate and angle of the pre-fiber spraying module and the main fiber spraying module can be set independently; The control unit can automatically correct the spraying parameters according to the fabric thickness, the conveying speed of the conveying device and the real-time pressure feedback signal of the roller, so as to meet the dynamic process requirements of electronic fabrics of different thicknesses and improve the adaptability and intelligence level of the equipment.

[0028] (4) Improve water resource utilization and operational economy; the circulating water system is equipped with filtration and recirculation functions, which can realize the efficient recycling and reuse of spray water from the pre-fiber spray module and the main fiber spray module, reduce water consumption and discharge burden in the production process, and at the same time reduce energy consumption and operating costs, and realize green manufacturing.

[0029] In summary, this invention not only solves the technical problems of excessive spray energy, uneven flow field distribution, and inflexible parameter adjustment in existing spraying mechanisms, but also achieves compatible production of thick and thin fabrics through modular design and intelligent control, thereby improving the process stability, product consistency, and equipment applicability of the electronic cloth surface treatment process. Attached Figure Description

[0030] To more clearly illustrate the technical solution of the present invention, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a side view of the spray mechanism of the present invention;

[0032] Figure 2 This is a schematic diagram of the electrical connection structure of multiple mechanisms in the control unit of the present invention;

[0033] Figure 3 This is a schematic diagram of the structure of the fan-shaped nozzle of the present invention;

[0034] Figure 4 This is a schematic flowchart of the electronic cloth surface treatment method of the present invention.

[0035] The reference numerals in the attached figures are as follows:

[0036] 1. Frame; 11. Adjustment fixture;

[0037] 2. Conveying device;

[0038] 3. Pre-opened fiber spraying module; 31. Jet nozzle;

[0039] 4. Main fiber-optic spray module; 41. Fan-shaped nozzle; 411. Laminated flow channel; 412. Spring sheet; 413. Stepped surface; 414. Screw; 415. Servo motor; 42. Upper spray section; 43. Lower spray section;

[0040] 5. Circulating water system; 51. Pre-opened fiber water circuit branch; 511. First water pump; 52. Main open fiber water circuit branch; 521. Second water pump; 53. Return main pipe; 54. Filtration device; 55. Collection tank;

[0041] 6. Control unit; 61. Human-machine interface module; 62. PLC controller; 63. Frequency converter;

[0042] 7. Electronic cloth;

[0043] 8. Water flow. Detailed Implementation

[0044] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0045] The specific implementation provides a modified spraying mechanism and method for electronic fabric surface treatment, including a pre-fiber-opening spraying module equipped with jet-type nozzles for pre-loosening and preliminary cleaning of the electronic fabric; a main fiber-opening spraying module equipped with fan-shaped nozzles, located downstream of the pre-fiber-opening spraying module, for the final fiber opening of the electronic fabric through uniform spraying; a circulating water system connected to both the pre-fiber-opening spraying module and the main fiber-opening spraying module, for providing spraying water and recycling filtration; and a control unit electrically connected to each spraying module for independently adjusting spraying parameters. Through graded control of spraying energy and uniform distribution of the spray flow field, the problems of fiber breakage and uneven air permeability in thin electronic fabrics during spraying are avoided. This method is suitable for surface treatment processes of electronic fabrics of different thicknesses, improving product consistency and equipment intelligence. It effectively solves the technical problems of existing spraying mechanisms, such as excessively high spraying energy, uneven spray flow field distribution, and non-adaptive adjustment of spraying parameters, making it difficult to meet the surface treatment requirements of electronic fabrics of different thicknesses.

[0046] The first implementation of the spraying mechanism, for example Figure 1 and Figure 2 As shown, the system includes a frame 1 and a conveying device 2 mounted on the frame 1 for conveying electronic fabric 7. It also includes: a pre-fiber-opening spray module 3, located at the inlet end of the conveying device 2, equipped with jet nozzles 31 for pre-loosening and initial cleaning of the passing electronic fabric 7; a main fiber-opening spray module 4, located downstream of the pre-fiber-opening spray module 3, equipped with fan-shaped nozzles 41 for uniformly spraying the pre-fiber-opened electronic fabric 7 for final fiber opening; a circulating water system 5, connected to both the pre-fiber-opening spray module 3 and the main fiber-opening spray module 4, for providing spraying water and recycling / filtering it; and a control unit 6, electrically connected to both the pre-fiber-opening spray module 3 and the main fiber-opening spray module 4, for independently adjusting the spraying parameters of the pre-fiber-opening spray module 3 and the main fiber-opening spray module 4, and electrically connected to the circulating water system 5 to control the recycling and reuse of the spraying water.

[0047] like Figure 1 As shown, the direction indicated by the arrow is the conveying direction of the electronic cloth 7.

[0048] The conveying device 2 is electrically connected to the control unit 6 and is used to adaptively control the speed at which the conveying device 2 conveys the electronic cloth 7 according to the thickness of the electronic cloth 7 and the spraying parameters of the pre-fiber spraying module 3 and the main fiber spraying module 4.

[0049] Specifically, the spraying mechanism of this invention, through a graded collaborative structure of a pre-fiber-opening spraying module 3 and a main fiber-opening spraying module 4 set on the same production line, and combined with an independently controllable circulating water system 5 and a control unit 6, optimizes the structure and flow field for the surface treatment process of electronic-grade glass fiber cloth of different thicknesses, achieving several technical effects: graded control of spraying energy to avoid damage to thin cloth; controllable output impact force by using jet nozzles 31 in the pre-fiber-opening spraying module 3, combined with frequency-adjustable water pump control, for initial fiber loosening and impurity removal; and the main fiber-opening spraying module 4 uses fan-shaped nozzles 41, forming a uniformly distributed fan-shaped diffusion water curtain through flow channel modulation, achieving a gentle spraying effect and avoiding fiber breakage, warp and weft deformation, and fabric perforation caused by traditional high-pressure jets.

[0050] Improve the spray flow field distribution and enhance the uniformity of the fabric surface; the fan-shaped nozzle 41 provides a large area and uniform fan-shaped water curtain coverage in the main fiber opening spraying process, which can realize synchronous wetting and balanced cleaning of the entire width of the electronic cloth 7, significantly improve the problem of uneven fiber opening and poor air permeability of thin cloth, and make the fiber opening consistency, surface cleanliness and air permeability distribution of the fabric surface more uniform.

[0051] The spraying parameters can be independently and adaptively adjusted. Through the linkage between the control unit 6 and the human-machine interface module 61, the spraying pressure, flow rate and angle of the pre-fiber opening spraying module 3 and the main fiber opening spraying module 4 can be set independently. The control unit 6 can automatically correct the spraying parameters according to the fabric thickness, the conveying speed of the conveying device 2 and the real-time pressure feedback signal of the roller, so as to meet the dynamic process requirements of electronic cloth 7 with different thicknesses and improve the adaptability and intelligence level of the equipment.

[0052] Improve water resource utilization and operational economy; the circulating water system 5 is equipped with filtration and recirculation functions, which can realize the efficient recycling and reuse of spray water from the pre-fiber spray module 3 and the main fiber spray module 4, reduce water consumption and discharge burden in the production process, and at the same time reduce energy consumption and operating costs, and achieve green manufacturing.

[0053] In summary, the design of the spraying mechanism not only solves the technical problems of excessive spraying energy, uneven flow field distribution, and inflexible parameter adjustment in existing spraying mechanisms, but also achieves compatible production of thick and thin fabrics through modular design and intelligent control, thereby improving the process stability, product consistency, and equipment applicability of the electronic cloth surface treatment process 7.

[0054] As one alternative implementation method:

[0055] Regarding the spray structure of the aforementioned main fiber-opening spray module 4, this embodiment is, for example... Figure 1As shown, the main fiber spraying module 4 includes an upper spraying section 42 and a lower spraying section 43 arranged opposite each other, and both the upper spraying section 42 and the lower spraying section 43 are provided with fan-shaped nozzles 41; the electronic cloth 7 passes between the upper spraying section 42 and the lower spraying section 43.

[0056] The upper spray section 42 and / or the lower spray section 43 are mounted on the frame 1 by an adjustable clamp 11, which is used to adjust the distance and spray angle of the fan-shaped nozzle 41 relative to the electronic cloth 7.

[0057] During equipment operation, the electronic cloth 7 is pulled by the conveying device 2 and passes between the upper spray section 42 and the lower spray section 43, forming a working condition of simultaneous spraying on both sides. The fan-shaped nozzles 41 of the upper spray section 42 and the fan-shaped nozzles 41 of the lower spray section 43 spray fan-shaped water curtains at set angles under the adjustment of the adjustable clamps, forming a covering water flow coverage area, thereby producing a uniform hydraulic dispersion effect on the fiber surface.

[0058] By adjusting the distance between the nozzle and the fabric surface and the spray angle, the impact energy and coverage width of the fan-shaped water curtain can be precisely controlled, ensuring that the thin electronic fabric 7 maintains sufficient fiber opening while avoiding fiber breakage or fabric deformation due to excessive local impact. This structure works in conjunction with the jet impact of the pre-fiber opening spray module 3, allowing the fibers to receive flexible and uniform secondary spraying after initial loosening, achieving simultaneous improvement in graded fiber opening and surface cleanliness.

[0059] The adjusting clamp 11 can be adjusted to multiple angles and repeatable positioning by using a locking screw 414, a universal joint or a linear slide rail mechanism; the installation positions of the upper spray section 42 and the lower spray section 43 can also be set with guide limit plates according to the width of the electronic cloth 7. The guide limit plates work together with the rollers to clamp the electronic cloth 7 to stabilize the cloth tension and running trajectory.

[0060] The electronic control part of the adjusting clamp 11 is electrically connected to the control unit 6 and is used to adaptively adjust the angle and position of the fan-shaped nozzle 41 of the main fiber-opening spray module 4 mounted on the adjusting clamp 11 according to the thickness of the electronic cloth 7.

[0061] Regarding the water recovery structure of the aforementioned circulating water system 5, this implementation is, for example... Figure 1 As shown, the circulating water system 5 includes a pre-fiber opening water branch 51, a main fiber opening water branch 52, a return main pipe 53, and a filter device 54. The pre-fiber opening water branch 51 is connected to the pre-fiber opening spray module 3 through a pipe and is driven by the first water pump 511 in the pre-fiber opening water branch 51. The main fiber opening water branch 52 is connected to the main fiber opening spray module 4 through a pipe and is driven by the second water pump 521 in the main fiber opening water branch 52. The pre-fiber opening water branch 51 and the main fiber opening water branch 52 converge into the return main pipe 53, and the return main pipe 53 is connected to the filter device 54.

[0062] The first water pump 511 and / or the second water pump 521 are variable frequency water pumps.

[0063] During operation, the pre-fiber opening water path branch 51, supplied by the first water pump 511, supplies water to the pre-fiber opening spray module 3, and the main fiber opening water path branch 52, supplied by the second water pump 521, supplies water to the main fiber opening spray module 4. The sprayed water flows through the fabric surface and collects in the collection tank 55 below. The collection tank 55 is connected to the return main pipe 53. The collected water flows back into the return main pipe 53 and is recycled to the filter device 54. After filtration, it is circulated back to the corresponding branch for use.

[0064] This structure enables independent water supply and recycling for both pre-fiber opening and main fiber opening, avoiding flow interference caused by process differences. At the same time, it uses a variable frequency water pump to dynamically adjust the flow and pressure, achieving water supply matching under different fabric thicknesses and conveying speeds. Furthermore, the hierarchical control logic of the circulating water system's five-coordinated spray module can stably maintain constant spray pressure, ensuring uniform flow field and optimal energy consumption.

[0065] In addition, the filtration device 54 adopts a filtration combination of multi-layer filter screen and centrifugal separator to remove impurities and slurry particles; a flow sensor and a pressure sensor are installed on the return main pipe 53, and the PLC controller 62 of the control unit 6 realizes real-time monitoring and automatic feedback adjustment; a check valve is added at the connection between the collection tank 55 and the return main pipe 53 to prevent the collected water from flowing back into the collection tank 55.

[0066] Regarding the specific structure of the aforementioned control unit 6, this embodiment is as follows: Figure 2 As shown, the control unit 6 includes a human-machine interface module 61, a PLC controller 62, and a frequency converter 63 connected to the first water pump 511 and the second water pump 521 respectively. The human-machine interface module 61 is used to input control commands. The PLC controller 62 communicates with the human-machine interface module 61 and the frequency converter 63 and is used to adjust the operating frequency of the corresponding first water pump 511 and second water pump 521 through the frequency converter 63 according to the control commands.

[0067] When applying the technology, the operator inputs control parameters such as spray pressure, spray time, and cloth speed matching mode through the human-machine interface module 61. After receiving the instructions, the PLC controller 62 adjusts the working frequency of the first water pump 511 and the second water pump 521 through the frequency converter 63 to realize independent spray energy and flow control of the pre-fiber spray module 3 and the main fiber-opening spray module 4.

[0068] Branch pressure sensors are installed in both the pre-fiber water branch 51 and the main fiber water branch 52 to detect the pressure of water transport in the pipeline; nozzle pressure sensors are installed in both the jet nozzle 31 of the pre-fiber spray module 3 and the fan-shaped nozzle 41 of the main fiber spray module 4 to detect the water flow pressure at the nozzle end.

[0069] The control unit 6 can also realize the independent setting and real-time linkage of the pre-fiber spraying module 3 and the main fiber spraying module 4. It can control the water pump to output low-speed, low-pressure flexible water flow to prevent impact on the electronic cloth 7 during the start-up phase, and can automatically correct the water supply pressure value through the frequency converter 63 based on the pressure value fed back by the branch pressure sensor and the nozzle pressure sensor during the stable operation phase, so as to realize the closed-loop regulation of the spraying process. The control logic of the control unit 6 works in conjunction with the dual-circuit circulating water system 5 to enable the spraying mechanism to have adaptive operation capability, thereby being compatible with the different process requirements of thick and thin cloths.

[0070] The human-machine interface further integrates process formula management and historical data recording functions; the PLC controller 62 can be connected to newly installed temperature, flow or turbidity sensors to realize full system monitoring of electronic cloth 7 spray fiber opening; the control unit 6 also reserves a remote communication interface for docking with the host computer's MES system.

[0071] The second implementation of the spraying mechanism is as follows: Figure 1 As shown, the difference between this embodiment and the first embodiment is that the fan-shaped nozzles 41 of the upper spray section 42 and the lower spray section 43 are arranged alternately; and the angle between the spray axis of the fan-shaped nozzle 41 of the upper spray section 42 and the vertical direction is α=10°-25°, the angle between the spray axis of the fan-shaped nozzle 41 of the lower spray section 43 and the vertical direction is β=10°-25°, and the projections of the spray axes of the nozzles of the upper spray section 42 and the lower spray section 43 on the horizontal plane intersect.

[0072] When the electronic cloth 7 passes through the upper spray section 42 and the lower spray section 43, the fan-shaped nozzles 41 of the upper spray section 42 and the lower spray section 43 are arranged in an alternating manner, and the angle between their respective spray axes and the vertical direction is within the range of 10° to 25°. The water flow from the fan-shaped nozzles 41 of the upper spray section 42 and the fan-shaped nozzles 41 of the lower spray section 43 converge on the cloth surface to form an alternating shear hydraulic distribution. This structure makes the water flow form a complementary impact zone and a buffer zone on the cloth surface, improving the problem of striped watermarks that are easy to occur in traditional parallel spraying.

[0073] By optimizing the combination of spray angles α and β, the incident direction and shear force distribution of the water flow from the fan-shaped nozzle 41 on the fabric surface can be controlled, thereby achieving flexible peeling and uniform wetting of the surface fibers of the thin fabric, and further improving the cleanliness of the fabric surface and the uniformity of fiber opening.

[0074] The spray angles α and β of the control unit 6 can be dynamically adjusted according to the cloth speed, cloth thickness and spray pressure.

[0075] The third implementation of the spraying mechanism is as follows: Figure 3 As shown, the difference between this embodiment and the first embodiment is that...

[0076] The fan-shaped nozzle 41 has an adjustable lamination channel 411 inside. The lamination channel 411 is configured to make the water flow sprayed from the fan-shaped nozzle 41 spread in a fan shape and the thickness and size of the fan-shaped water flow can be adjusted.

[0077] Specifically, the laminated flow channel 411 is formed by two upper and lower oppositely arranged spring plates 412, and the two spring plates 412 are each inclined towards the central axis of the water flow 8. The spring plates 412 gradually decrease from top to bottom along the length direction from one end to the other and form a stepped surface 413 facing the direction of the water flow 8. The cylindrical water flow 8 impacts the spring plates 412 and its stepped surface 413. The spring plates 412 squeeze the water flow 8 to form a fan-shaped diffused water flow.

[0078] The two springs 412 are adjusted by the screw 414 to move toward the central axis of the water flow 8, so that the thickness and size of the fan-shaped water flow can be adjusted; the screw 414 can also be driven by the installed servo motor 415 or motor and electrically connected to the control unit 6 to realize the automatic adjustment of the fan-shaped water flow.

[0079] When the spray is in operation, the water flow 8 forms a controllable fan-shaped diffusion surface at the nozzle outlet after passing through the laminated flow channel 411. The thickness and unfolding angle of the fan-shaped water curtain can be changed by adjusting the spacing of the laminated plates, so that the spray flow field remains stable and uniformly distributed under different working conditions.

[0080] The laminated flow channel 411 structure can effectively buffer pressure pulsation, eliminate spray dead angles and flow concentration, and work in conjunction with the upper spray section 42 and lower spray section 43 of the main fiber opening spray module 4 to further improve the spray uniformity and fabric wetting consistency of the electronic cloth 7, ensuring stable fiber opening of the thin cloth under high-precision process conditions.

[0081] In addition, a flow straightener or diffuser can be installed at the nozzle outlet to further balance the water flow field at the drainage end.

[0082] Based on the above embodiments of the spraying mechanism, a surface treatment method for electronic cloth 7 is provided, which employs a spraying mechanism, including as follows: Figure 4 The following steps are shown in sequence: S1: The electronic cloth 7 is conveyed by the conveying device 2 through the pre-fiber opening spray module 3 and the main fiber opening spray module 4 in sequence;

[0083] S2: High-pressure pre-fiber opening is performed on the electronic cloth 7 through the jet nozzle 31 of the pre-fiber opening spray module 3;

[0084] S3: The pre-fiber-opening electronic cloth 7 is sprayed with a uniform and gentle fan-shaped water curtain through the fan-shaped nozzles 41 of the main fiber-opening spray module 4 to complete the final fiber-opening process.

[0085] S4: The spray intensity of the pre-fiber opening spray module 3 and the main fiber opening spray module 4 can be independently adjusted by the control unit 6 to adapt to electronic cloth 7 of different thicknesses.

[0086] In step S4, the operating frequency of the first water pump 511 corresponding to the pre-fiber spray module 3 is set by the human-machine interface module 61 of the control unit 6 to control the impact force of the water flow sprayed by the jet nozzle 31 on the electronic cloth 7; at the same time, the operating frequency of the second water pump 521 corresponding to the main fiber spray module 4 is set independently to control the uniformity and softness of the fan-shaped water curtain of the fan-shaped nozzle 41.

[0087] When applied, the electronic cloth 7 passes through the pre-fiber spraying module 3 and the main fiber spraying module 4 in sequence via the conveying device 2. During the entire spraying process, the control unit 6 automatically matches different spraying energies and water flows according to the cloth thickness and running speed, so that the jet nozzle 31 and the fan nozzle 41 are activated under the control of the control unit 6.

[0088] First, the jet nozzles 31 in the pre-fiber opening spray module 3 output concentrated water flow with high kinetic energy, which acts on the surface of the electronic cloth 7 and the gaps between the fibers. Through the coupling effect of impact force and shear force, it can effectively break the residual slurry, impurities and initial adhesives inside the fabric, forming the initial loosening and opening of the fiber bundle.

[0089] Subsequently, after the electronic cloth 7 enters the main fiber opening spray module 4, the water curtain sprayed by the fan-shaped nozzle 41 sprays the cloth surface in a large-area, low-impact diffusion manner for secondary spraying. The uniform distribution of the water curtain and the effect of gentle spraying can stabilize the fiber orientation of the electronic cloth 7 and prevent the fibers of the thin electronic cloth 7 from shifting or breaking under high pressure.

[0090] The entire process achieves intelligent, graded spraying through coordinated control of the control unit 6. The PLC controller 62 receives instructions from the human-machine interface module 61 and adjusts the operating frequencies of the first water pump 511 and the second water pump 521 respectively, keeping the water pressure and flow rate of the jet nozzle 31 and the fan nozzle 41 within the optimal range. This dual-path independent adjustment control logic enables the spraying energy output and the thickness of the electronic cloth 7 to form a closed-loop adaptive match, thereby achieving a synergistic effect of "pre-fiber opening reinforcement to main fiber opening softening". Through the combined effect of this graded control and the optimization of the fiber opening water flow field, the fiber dispersion and cloth surface cleanliness can be significantly improved, ensuring the air permeability and surface uniformity of the thin electronic cloth 7, and solving the technical problems of fiber damage and uneven spraying caused by high-energy spraying in the prior art.

[0091] Under different working conditions, operators can preset multiple sets of process parameter templates through the human-machine interface module 61 to quickly switch between thick and thin cloth modes; the system of the control unit 6 can be connected to flow, pressure and temperature sensors to collect and feedback real-time data in order to realize closed-loop correction of spray pressure and adaptive optimization of process.

[0092] In addition, after the spraying is completed, the collected water can be recycled and filtered by the circulating water system 5, and then sprayed onto the subsequent fiber-opening electronic cloth 7 to further reduce process energy consumption and water consumption.

[0093] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described.

Claims

1. A spraying mechanism for modifying the surface treatment of electronic fabric, comprising a frame and a conveying device for conveying electronic fabric mounted on the frame, characterized in that, Also includes: A pre-fiber spraying module is installed at the inlet end of the conveying device. The pre-fiber spraying module is equipped with jet nozzles for pre-loosening and preliminary cleaning of the passing electronic cloth. And a main fiber-opening spray module is located downstream of the pre-fiber-opening spray module. The main fiber-opening spray module is equipped with fan-shaped nozzles for uniformly spraying the pre-fiber-opened electronic cloth for final fiber opening. And a circulating water system, which is connected to the pre-fiber spraying module and the main fiber spraying module respectively, for providing spraying water and recycling filtration; And a control unit, electrically connected to the pre-fiber spraying module and the main fiber spraying module, for independently adjusting the spraying parameters of the pre-fiber spraying module and the main fiber spraying module, and electrically connected to the circulating water system to control the recycling of spraying water; The main fiber-opening spray module includes an upper spray section and a lower spray section arranged opposite each other, and both the upper spray section and the lower spray section are provided with the fan-shaped nozzles; the electronic cloth passes between the upper spray section and the lower spray section; The upper spray section and / or the lower spray section are mounted on the frame by an adjustable clamp, which is used to adjust the distance and spray angle of the fan-shaped nozzle relative to the electronic cloth. The fan-shaped nozzles of the upper spray section and the lower spray section are arranged alternately; and the angle between the spray axis of the fan-shaped nozzle of the upper spray section and the vertical direction is α=10°-25°, the angle between the spray axis of the fan-shaped nozzle of the lower spray section and the vertical direction is β=10°-25°, and the projections of the spray axes of the nozzles of the upper spray section and the lower spray section on the horizontal plane intersect. The circulating water system includes a pre-fiber opening water path branch, a main fiber opening water path branch, a return main pipe, and a filter device. The pre-fiber opening water path branch is connected to the pre-fiber opening spray module through a pipe and is driven by a first water pump within the pre-fiber opening water path branch. The main fiber opening water path branch is connected to the main fiber opening spray module through a pipe and is driven by a second water pump within the main fiber opening water path branch. The pre-fiber opening water path branch and the main fiber opening water path branch converge into the return main pipe, and the return main pipe is connected to the filter device. The first water pump and / or the second water pump are variable frequency water pumps; The control unit includes a human-machine interface module, a PLC controller, and frequency converters connected to the first water pump and the second water pump respectively. The human-machine interface module is used to input control commands. The PLC controller communicates with the human-machine interface module and the frequency converter and is used to adjust the operating frequency of the corresponding first water pump and the second water pump through the frequency converter according to the control commands. The fan-shaped nozzle has an adjustable lamination channel inside, which is configured to make the water flow sprayed from the fan-shaped nozzle diffuse in a fan shape and the thickness and size of the fan-shaped water flow can be adjusted.

2. A method for surface treatment of electronic cloth, employing the spraying mechanism as described in claim 1, characterized in that, The process includes the following steps performed sequentially: S1: The electronic fabric is conveyed by a conveying device and passes through the pre-fiber opening spray module and the main fiber opening spray module in sequence; S2: The electronic fabric is subjected to high-pressure pre-fiber opening through the jet nozzles of the pre-fiber opening spray module; S3: The electronic fabric that has undergone pre-fiber opening is uniformly and gently sprayed with a fan-shaped water curtain through the fan-shaped nozzles of the main fiber opening spray module to complete the final fiber opening process. S4: The spray intensity of the pre-fiber opening spray module and the main fiber opening spray module can be independently adjusted by the control unit to adapt to electronic cloths of different thicknesses.

3. The method for surface treatment of electronic cloth according to claim 2, characterized in that, In step S4, the operating frequency of the first water pump corresponding to the pre-fiber spray module is set through the human-machine interface module of the control unit to control the impact force of the water flow sprayed by the jet nozzle on the electronic cloth; at the same time, the operating frequency of the second water pump corresponding to the main fiber spray module is set independently to control the uniformity and softness of the fan-shaped water curtain of the fan-shaped nozzle.

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